Summary:
Antioch Unified has 15 elementary-level schools serving grades K–5 through K–8, with enrollments from 261 to 751. In 2025–26, their average proficiency was 28% in English language arts, 20% in math and 18% in science, compared with California averages of 49%, 38% and 36%. The clearest overall finding is that no school matched the state average in any subject, including the top-performing school in each subject.
Orchard Park led all-grades ELA at 43%, 15 percentage points above the school-group average, though still 7 points below the state. Thomas Gaines Virtual Academy led math at 34% and science at 35%, respectively 14 and 17 points above the group averages; it remained 4 points below the state in math and 1 point below in science. Diablo Vista also scored above the group average in all three subjects. At the other end, Marsh had the lowest ELA and math results, at 16% and 10%, while Belshaw had the lowest science result, at 3%.
Average results improved from 2024–25 to 2025–26 in ELA and math by about 2 points in each, and in science by 1 point. Scores rose at 11 of 15 schools in ELA and 12 in math, but only 5 in science; even so, the science gap with California widened. SchoolDigger’s statewide rankings also show movement: Diablo Vista rose 14 percentile points to the 43rd percentile, while Thomas Gaines rose 11 points to the 41st; these are rankings, not test scores. Other factors vary without forming a clear pattern: student–teacher ratios range from 17.4 to 24.6, and all schools reported free/reduced lunch eligible for 2024–25, from 59% at Muir (John) Elementary to 90% at Thomas Gaines. Thomas Gaines also had 57% chronic absenteeism, compared with 31% districtwide and 18% statewide; Sutter was the only school below the state rate, at 17%. All-grades scores combine different grade spans, so grade-specific comparisons can offer a more like-for-like picture.
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